وَيَنْبَغِي أَنْ لَا يُقْبَلَ الْجَرْحُ وَالتَّعْدِيلُ إِلَّا مِنْ عَدْلٍ مُتَيَقِّظٍ
Criticism and endorsement should be accepted from an upright, attentive specialist.
If a transmitter receives vague disapproval while another authority gives strong endorsement, a decisive ruling is difficult without investigating the criticism. By contrast, the specific claim that a narrator repeatedly misreported from one teacher can be checked against other evidence.
Explained jarḥ means criticism with an identifiable ground. The critic’s integrity, expertise, and the actual significance of the reason remain essential.